package com.king.first.app.process;

import com.king.first.bean.WaterSensor;
import com.king.first.utils.ContentUtils;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.windowing.ProcessWindowFunction;
import org.apache.flink.streaming.api.windowing.assigners.TumblingEventTimeWindows;
import org.apache.flink.streaming.api.windowing.time.Time;
import org.apache.flink.streaming.api.windowing.windows.TimeWindow;
import org.apache.flink.util.Collector;

public class Flink_ProcessWindowFunction {

    public static void main(String[] args) {

        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment().setParallelism(1);

        SingleOutputStreamOperator<WaterSensor> waterSensorStream = env.socketTextStream(ContentUtils.HOST, 9999)
                .map(new MapFunction<String, WaterSensor>() {
                    @Override
                    public WaterSensor map(String value) throws Exception {
                        String[] datas = value.split(",");
                        return new WaterSensor(datas[0], Long.valueOf(datas[1]), Integer.valueOf(datas[2]));
                    }
                });

        waterSensorStream.keyBy(v -> v.getId())
                .window(TumblingEventTimeWindows.of(Time.seconds(10)))
                .process(new ProcessWindowFunction<WaterSensor, String, String, TimeWindow>() {

                    @Override
                    public void process(String s, ProcessWindowFunction<WaterSensor, String, String, TimeWindow>.Context context, Iterable<WaterSensor> elements, Collector<String> out) throws Exception {

                    }

                    @Override
                    public void clear(ProcessWindowFunction<WaterSensor, String, String, TimeWindow>.Context context) throws Exception {

                    }
                });

    }
}
